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Minnesota Faces Unusual Fungal Outbreak Spread Through Sexual Contact

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  Published in Health and Fitness on Sunday, February 15th 2026 at 1:21 GMT by KSTP-TV
      Locales: Minnesota, UNITED STATES

MINNEAPOLIS, MN - February 15th, 2026 - Minnesota health officials are battling an unusual and escalating outbreak of Trichophyton mentagrophytes, a fungus typically associated with ringworm, but now spreading primarily through sexual contact. This marks the largest known outbreak of this sexually transmitted fungal infection in the United States, raising concerns amongst medical professionals and public health authorities.

As of today, the Minnesota Department of Health has confirmed over 70 cases, with the majority affecting young adults. While ringworm itself isn't new, the method of transmission and the scale of this outbreak are what set it apart. Traditionally, T. mentagrophytes is spread through direct skin-to-skin contact, sharing contaminated items like towels, clothing, or even surfaces in locker rooms. This outbreak, however, demonstrates a clear pattern of transmission via sexual activity - a significant departure from the norm.

"We're seeing a clear connection between sexual contact and the spread of this fungal infection, which is very atypical," explains Dr. Joseph Henderson, an infectious disease specialist with Allina Health. "Historically, this fungus has been associated with athlete's foot or jock itch, but its presentation in this outbreak is different, and the transmission route is concerning."

Minnesota Health Commissioner Janet Lawless emphasizes the gravity of the situation. "This is the largest known outbreak of this kind in the United States. We are taking it very seriously and working diligently to understand the factors driving its spread and to contain it effectively." The department has launched a public awareness campaign to educate individuals about the symptoms, transmission, and prevention of the infection.

What's Driving the Outbreak?

Health officials are investigating several potential factors contributing to the surge in cases. While a definitive cause remains elusive, current theories include changes in personal hygiene and grooming habits, increased sharing of potentially contaminated personal items, and the possibility of a more virulent strain of the T. mentagrophytes fungus.

"It's possible the fungus itself has evolved, becoming more infectious, or that societal behaviors have changed, creating more opportunities for transmission," Dr. Henderson suggests. The possibility of a genetic mutation within the fungus is being investigated through ongoing laboratory analysis. Researchers are comparing the current strains to those documented in past cases to identify any significant differences in their infectiousness or resistance to antifungal medications.

Recognizing the Symptoms

The symptoms of ringworm caused by T. mentagrophytes can vary, but typically manifest as a scaly, itchy rash. The rash can appear anywhere on the body, but is commonly found on the torso, arms, and legs. In some cases, the infection can also affect the scalp, causing hair loss, or the nails, leading to thickening and discoloration. Crucially, the rash may not always present in the classic "ring" shape, making diagnosis more challenging. Individuals might mistake it for other skin conditions, delaying appropriate treatment.

Treatment and Prevention

The good news is that ringworm caused by T. mentagrophytes is generally treatable with antifungal medication, either in oral or topical form. However, early diagnosis and prompt treatment are crucial to prevent the spread of the infection and to minimize discomfort. Oral medications are typically prescribed for more severe or widespread infections.

The Minnesota Department of Health strongly urges individuals to practice good hygiene, including:

• Regularly washing hands with soap and water.
• Avoiding sharing personal items such as towels, clothing, and razors.
• Thoroughly cleaning and disinfecting surfaces that may come into contact with skin.
• Practicing safe sex, including the use of condoms, which can reduce (but not eliminate) the risk of transmission.
• Consulting a healthcare professional if they notice any unusual rash or skin irritation.

Broader Implications

This outbreak is occurring alongside a broader trend of increasing sexually transmitted infections (STIs) in Minnesota. Health officials are concerned that this confluence of factors may indicate a decline in preventative healthcare practices or a need for increased resources dedicated to sexual health education and testing. This serves as a crucial reminder of the importance of regular STI screenings and open communication with healthcare providers.

The department is collaborating with local clinics and hospitals to ensure adequate supplies of antifungal medications and to provide guidance on diagnosis and treatment. They are also actively monitoring the situation and will adjust their response as needed to protect the public's health. The ongoing investigation seeks to determine the full extent of the outbreak and to implement effective strategies to prevent further spread of this unusual and concerning fungal infection.